Finding the Fourth Proportional to 12,844.09, 17,697.18 and 8,645.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,844.09 : 17,697.18 = 8,645.05 : x
2. Step 2: Convert to fraction form
   12,844.09/17,697.18 = 8,645.05/x
3. Step 3: Cross multiply
   12,844.09x = 17,697.18 × 8,645.05
4. Step 4: Simplify right side
   12,844.09x = 152,993,005.96
5. Step 5: Solve for x
   x = 152,993,005.96/12,844.09
6. Step 6: Final answer
   x = 11,911.55